In the recent weeks, I think the harness/model came to a point that you can just ask it to do stuff and it just does. You can use plan mode, you can also use superpowers, or whatever other skill, but given that you'll review something anyway, why not work directly with code instead of silly amounts of md files?
> but given that you'll review something anyway,
If you aren't using AI for code review in 2026, why would you even bother? High quality, error-free, better-than-human code generation AND review is available for cheaper than ever. Why are you wasting your life reading code you didn't even write?
I like having a spec file that is used to generate the code. It's more dense and easier to understand what the application is supposed do. Prior to AI Agents, I had a more complex relationships with requirements because not all devs updated them. I was confused if the spec or code was the correct behavior for any aspect of the application.